Umm...you should ( must) report that so this creep loses his practicing licens and hopefully goes to jail too, so he can't take advantage of other vulnerable women again. My thoughts are he does this on a regular basis. He's a psycho. And it's totally illegal what he's doing.
It will be your word against his, he will deny it and claim that you're crazy. Doctors asses are pretty well protected but they're not completely untouchable. You should see if you can find witnesses. Go back to the doffs laces you two visited together. Remember the dates, they could perhaps track it on his credit card, if he paid with that.
Or go visit him with a hidden recorder on your person and make sure he's saying all those inappropriate conversations he have had with you before. This guy needs to go down! You don't want it to happen to another woman now, right? Someone else that might be depressed, suicidal and needy.